Karina's parents are strict and impose a 5 p.m. curfew, limiting dates with her boyfriend to cafés and museums. He longs to progress further, but her father always calls her home. Invited to Karina's house one day, he meets her mother Ayaha, a beautiful adult woman radiating mature allure. When Ayaha orders him to break up with her daughter, he impulsively pushes her down. From then on, he and Ayaha begin meeting in secret—always immediately after Karina leaves to meet her curfew.